"Since there is no full story/ fanfic behind this I can only describe what I had in mind drawing it ^^ It shows AJ and Dash after they got outed. Obviously it did not run as smooth as 99% of all Appledash-storys describe it. While AJ is down and disappointed, Dash gets angry and very defensive, ready to protect their love against all odds... gee thats mushy xD"

Since there is no full story/ fanfic behind this I can only describe what I had in mind drawing it ^^ It shows AJ and Dash after they got outed. Obviously it did not run as smooth as 99% of all Appledash-storys describe it. While AJ is down and disappointed, Dash gets angry and very defensive, ready to protect their love against all odds... gee thats mushy xD

Well you might want to consider doing some practice runs at more "dramatic scenes" just to get the feel for them and get feedback from other writers. (Who are some of the writers you've read and books you've appreciated?) There's also looking at writers who you feel do such things well and trying to figure out how they get it to work.

You may also want to consider trying to tackle the issue even within the framework of a comic prose story. I don't necessarily consider comedy to be exclusive of serious examination of human (or in this case: sapient equine) emotions. Arguably MLP touches on serious matters of friendship and to behave ethically in the context of being a broad comedy. Plus homophobia is something ripe for comic treatment, if only to mercilessly skewer it and hold it up to mockery.

I also have the feeling that most fanfics and also quite some books and original stories are somehow based on something that happened to the author. And I have to be honest: There isn't really a thing that happened to me that I can fit in a MLP fic, or want to change in a fanfic even.

"I also have the feeling that most fanfics and also quite some books and original stories are somehow based on something that happened to the author."

You have the feeling, but have you asked fan fic writers where they get their ideas? Or looked at other authors in general?

The answers can be surprising. My favourite fantasy writer, Michael Moorcock, claims to read very little fantasy and as far as I know his writings aren't based as directly on his life experiences as say, JRR Tolkien's World War I experiences informing LORD OF THE RINGS. He has gone straight back to mythology, but he also claims to read a lot of "social fiction". And it comes out in odd ways like in his Elric fantasies where the titular character destroys a corrupt Empire he was once part of (now consider that in the context of Moorcock being an working class, English radical writing in post-war Britain in the 1960s). Arthur Conan Doyle, the creator and writer of the classic Sherlock Holmes stories, based his lead character on his university professors Joseph Bell a pioneer in forensic science (though gave Holmes a very different, almost cold-blooded personality). Supposedly Holmes arch-nemesis, Professor Moriarty was based on American criminal Adam Work [link] a man Doyle never knew personally but would have known from reading and newspapers. I've read that Full Metal Alchemist creator Hiromu Arakawa took a lot of ideas from reading news reports and talking to people who had once been in dire situations (like refugees or Yakuza) because she was concerned about social problems, and then did her world building by reading European history following the industrial revolution.

All of this is just to give you an idea of odd places writers can take inspiration from. I consider my life rather boring as well, even including the fact that was often bullied at school, which mostly consisted of name calling and occasional acts of more serious harassment. It never arose to the level of more serious forms of bullying that gay youth have faced, though it gives me an angle where I can gain a bit of insight into that that a story about a gay couple getting harassed doesn't seem like an intimidating task to me. (Well at least up until I start getting flustered over whether the prose is any good or I've written credible enough characterizations.) Plus I have friends who are queer who have had to go through some of that. You task might even be as simple as reading up on people who have been gay and experienced harassment of some form for it and seeing if you get enough insight and understanding to effectively construct a story from the understanding you've acquired.

(Author's note: my slant on this is partly informed by the fact that I read fiction and non-fiction with equal vigour and enthusiasm, being a history, political science, and social studies nerd. I'm also a music nerd and appreciate a good biography about a musical figure, especially if they are colourful one.)

I like sky colours and idea. AJ defeated? That's a rare moment. For the critique - AJ's legs should be longer, as well as RD's. They look a little too fat, especially Rainbow. Her wings could be spread in something like defence-mode, but it's okay. Keep up the good work!